There are various ways to achieve video scalability in WebRTC, and VP9 is going to add some intereting new opportunities in this regards. Learn what simulcast and SVC means and how they fit into the bigger picture in WebRTC.

When looking at a standard, make sure to check who is behind it and who is missing in action. It usually tells you the power play that is taking place. In the case of WebRTC, it all boils down to the change in hegemony over VoIP from vendors to browsers.